摘要:
Some embodiments provide an interface unit interfacing with an irrigation controller, comprising: a housing; a controller configured to instruct an interruption of a watering schedule executed by the irrigation controller, the interruption based on one or both of sensed temperature and sensed rainfall amount, and based on one or both of user entered temperature and rainfall threshold parameters; a switching device coupled with the controller, and configured to cause the interruption in response to signaling from the controller; and a user interface comprising: a plurality of user input devices configured to provide signaling to the controller based upon user's engagement, and configured to allow the user to define the temperature and rainfall threshold parameters; and a user display comprising a display screen; wherein the controller is configured to cause the display screen to display a plurality of pictorial representations that in combination convey whether irrigation is being interrupted.
摘要:
An Omega type biasing spring for use in a part circle gear driven sprinkler of the type having a reversing gear train mounted on a pivotal yoke and operated by a lost motion trip mechanism, the omega spring having a bulbous-shaped arcuate head section interconnected with laterally diverging leg sections through a narrow neck section defining a lateral gap which closes upon spring compression to reduce internal spring stress.
摘要:
A paint roller assembly for a pressurized paint supply system including a hollow roller arm, a delivery tube within the roller arm for receiving pressurized coating material such as paint therethrough, the tube terminating in a horizontally disposed end portion, a circular flange mechanically coupled to the roller arm inwardly of the end portion to prevent relative rotation therebetween, an annular sealing member received over the end portion and arranged to abut the circular flange while permitting relative rotational movement therebetween, a cylindrical roller core having one end received on the end portion, the core having an axially extending relatively shallow groove at its periphery along a major portion of its length, the roller core being recessed at the discharge end of the end portion to provide a sump therein of greater depth than the groove and communicating with the groove. Distributor means are positioned in the groove and have spaced apertures therealong to permit paint to flow from the groove into a perforated paint roller cover positioned over the roller core.
摘要:
A "rivetless" surface-mounted latch wherein functional parts, e.g., a pivotal latch bolt and handle and locking piece, are positioned within a housing in stacked relation, each piece being retained by the one above, the entire assemblage being held together by a staked cover plate.
摘要:
Methods and apparatus are provided herein for sensing rain fall for use in irrigation control. In one embodiment, a wireless rain sensor comprises a housing at least partially covering a first sensor, a controller and a wireless transmitter. The first sensor comprises a moisture absorptive material located to be contacted by rain fall and configured to expand in response to the contact with the rain fall and contract in response to an absence of the rain fall. The controller is coupled to the first sensor and configured to output signals corresponding to a variable amount of expansion and contraction of the moisture absorptive material. The wireless transmitter is configured to transmit wireless signals, at least one wireless signal comprising data corresponding to the variable amount of expansion and contraction of the moisture absorptive material.
摘要:
Methods and apparatus are provided herein for sensing rain fall for use in irrigation control. In one embodiment, a wireless rain sensor comprises a housing at least partially covering a first sensor, a controller and a wireless transmitter. The first sensor comprises a moisture absorptive material located to be contacted by rain fall and configured to expand in response to the contact with the rain fall and contract in response to an absence of the rain fall. The controller is coupled to the first sensor and configured to output signals corresponding to a variable amount of expansion and contraction of the moisture absorptive material. The wireless transmitter is configured to transmit wireless signals, at least one wireless signal comprising data corresponding to the variable amount of expansion and contraction of the moisture absorptive material.
摘要:
Methods and apparatus are provided herein for permitting or interrupting irrigation using sensor equipment. In one embodiment, a method for controlling irrigation comprising the steps of: generating an indication representing the amount of rain fall at a sensor unit; transmitting a signal comprising at least the indication from the sensor unit to an interface unit, wherein the interface unit is adapted to cause an interruption of programmed watering schedules of an irrigation controller; receiving the signal at the interface unit; determining, based at least on the indication from the signal, whether irrigation should be interrupted; and generating an interrupt command to interrupt irrigation.